SAA7893 PHILIPS [NXP Semiconductors], SAA7893 Datasheet - Page 45

• Manufacturer Part Number: SAA7893
• Description: Super audio media player
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 10925
Product data
Fig 44. Connection of EFM+ input.
10.2 HF input specification
The detection of the PSP key is dependent of the polarity of the EFM+ signal. The
SA-MP settings are that a pit on the disc must have a higher output voltage than the
land. The EFM+ input signal has no timing requirements with respect to the digital
input of the front-end interface of the SAA7893HL.
The SAA7893HL supports also an inversion of the EFM+ signal.
The AGC circuit must be able to handle the following signal characteristics of the
HF input signal.
Table 27:
The HF is AC-coupled via a capacitor of 10 nF to pin Agcinp. The internal resistance
of pin Agcinp is 1 M .
Table 28:
HF
Input range
Bandwidth
Pin name
Agcinp
biasin
Adcrefl
V
V
SSA
DDA
HF signal characteristics
Signal connections
Description
HF output from pickup unit connected via a 10 nF couple capacitor
bias current; connect a 12 k resistor to V
reference voltage for internal resistor trap; decouple with 100 nF to V
analog ground
1.8 V analog power supply
EFM
Rev. 02 — 26 February 2003
100 nF
12 k
10 nF
Agcinp
Adcrefl
biasin
Value
0.2 to 0.8 V (p-p)
9 MHz
V SSA
V DDA
1.8 V
MBL620
SS
(ground)
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Remark
HF input voltage
front-end running on
maximum speed needed for
SACD
Super audio media player
SAA7893HL
SS
(ground)
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